Net carb calculator
Copy the numbers from any nutrition label and see the carbs that actually count.
Your net carbs
Rule of thumb: 3 g or less is keto-friendly, 3 to 8 g is okay in moderation, over 8 g is a lot for one serving.
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How net carbs work
How do you calculate net carbs?
Net carbs = total carbohydrates − fiber − sugar alcohols (adjusted for how well each is absorbed). Erythritol and allulose are generally counted as zero; xylitol, maltitol and sorbitol are partly absorbed, so this calculator counts half of their grams.
Do I subtract all sugar alcohols?
Not necessarily. Erythritol and allulose have almost no effect on blood sugar for most people, so they are usually subtracted fully. Maltitol, sorbitol and xylitol are partly absorbed. Many keto eaters subtract only half of them or leave them in.
Is the “net carbs” number on the front of the package reliable?
Not always. “Net carbs” is not a regulated term in most countries. Check the Nutrition Facts panel and calculate it yourself.
What is a good daily net-carb limit?
Most ketogenic plans use roughly 20 to 50 grams of net carbs a day. Your doctor can help you choose a number that is right for you.